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螺旋(xuan)焊(han)管(guan)是將低碳(tan)(tan)碳(tan)(tan)素結(jie)構(gou)鋼(gang)(gang)或低合金結(jie)構(gou)鋼(gang)(gang)鋼(gang)(gang)帶按一定的螺旋(xuan)線(xian)的角(jiao)度(du)(du)（叫成型角(jiao)）卷成管(guan)坯(pi)，然后將管(guan)縫焊(han)接起來(lai)制成，它(ta)可(ke)以用(yong)較窄(zhai)的帶鋼(gang)(gang)生產大(da)直徑(jing)的鋼(gang)(gang)管(guan)。其規格用(yong)外徑(jing)*壁(bi)厚(hou)表示，焊(han)管(guan)應保證水壓試驗、焊(han)縫的抗拉(la)強度(du)(du)和冷彎性能要符合規定。

檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)工(gong)藝：原材料(liao)檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——校(xiao)平檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——對接焊檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——成型檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——內焊檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——外(wai)焊檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——切管檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——超(chao)聲波檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——坡(po)口檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——外(wai)形尺寸檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——X射線檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)——水(shui)壓試驗(yan)(yan)(yan)——最終檢(jian)(jian)(jian)(jian)(jian)(jian)驗(yan)(yan)(yan)

為保證產品(pin)質量，我們制定(ding)了完(wan)善的(de)質量計劃，現場工作程序及檢驗(yan)、試(shi)驗(yan)計劃。

一(yi)般螺(luo)旋焊(han)(han)(han)管(guan)機組均采用在(zai)線連續(xu)檢(jian)驗方式來保(bao)證(zheng)焊(han)(han)(han)縫(feng)的(de)的(de)焊(han)(han)(han)接(jie)質量，這是螺(luo)旋焊(han)(han)(han)管(guan)生(sheng)產(chan)區別于(yu)(yu)直縫(feng)焊(han)(han)(han)管(guan)生(sheng)產(chan)的(de)另一(yi)重要特(te)征。連續(xu)檢(jian)驗有利于(yu)(yu)焊(han)(han)(han)接(jie)缺陷(xian)的(de)監控、焊(han)(han)(han)接(jie)質量的(de)穩定、焊(han)(han)(han)接(jie)等(deng)級的(de)保(bao)證(zheng)。